Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ (472,569)	$ (428,700)	$ 335,255
Unrealized gain (loss) on short-term investment securities and cash and cash equivalents, net of deferred taxes of $(27), $(1) and $38	(92)	(20)	167
Interest rate derivative loss reclassified into earnings, net of taxes of $49, $63 and $76	178	189	239
Other comprehensive income (loss)	86	169	406
Comprehensive income (loss)	$ (472,483)	$ (428,531)	$ 335,661